https://catalogartifact.azureedge.net/publicartifacts/Microsoft.Disk-1.0.2/Images/ibiza/Large.png
Create disks for persistent storage to use with classic virtual machines.
Every Azure virtual machine is attached to at least one disk for the operating system and persistent storage. A disk can be a standard (HDD) or premium (SSD) drive. Disks created using this method can only be used with classic virtual machines.